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首页> 外文期刊>International journal of geotechnical engineering >Vertical uplift resistance of two horizontal strip anchors with common vertical axis
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Vertical uplift resistance of two horizontal strip anchors with common vertical axis

机译：具有相同垂直轴的两个水平条形锚的垂直抗拔性

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摘要

With an application of the upper bound finite element limit analysis, the vertical pullout capacity of a group of two horizontal strip plate anchors, with the common vertical axis and placed in a cohesive-frictional soil, has been computed. The variation of the uplift factors F_c, F and F_y, due to the contributions of soil cohesion, surcharge pressure and unit weight, respectively, has been evaluated for different combinations of S/B and H/B. As compared to single isolated anchor, the group of two anchors generates significantly greater magnitude of F_c for φ < 20° especially with greater values of H/B and under fully bonded anchor-soil interface condition. The factor F_c attains almost the maximum value when the upper anchor plate is placed midway between ground surface and the lower anchor plate. The factors F_q and F_y, on the other hand, for a group of two anchors are found to remain almost equal to that of a single isolated anchor as long as the levels of the lower plate in the group and the single isolated anchor are kept the same.
机译：应用上限有限元分析，计算了一组两个水平条形板锚的垂直拉拔能力，该锚具有共同的垂直轴并放置在黏性摩擦土中。对于S / B和H / B的不同组合，已经分别评估了由于土壤内聚力，附加压力和单位重量而引起的升力因子F_c，F和F_y的变化。与单个隔离锚相比，两个锚组在φ<20°时会产生明显更大的F_c量，尤其是在H / B值较大且锚固-土界面完全粘结的情况下。当将上锚板放置在地面和下锚板之间的中间位置时，系数F_c几乎达到最大值。另一方面，对于一组两个锚，发现因子F_q和F_y几乎等于单个孤立锚的因子，只要该组中下部平板和单个孤立锚的水平保持不变即可。相同。

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